How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 2/15100.0*Chance wins title100.0*Average seed
Central Oklahoma 3 Oklahoma 2 (ot)+0.8
Oklahoma 2 Central Oklahoma 3 -0.8
Week of 3/2100.0*Chance wins title100.0*Average seed
Arizona State 0 Arizona 2 Yes
+0.0
Points
Chance Will Win Championship